The number of occurrences of an event. For example, if a die is rolled 20 times and 4 sixes are observed, the absolute frequency of sixes is 4 and the relative frequency is 4/20.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。